CN101725714A - High elasticity and high strength dust ring - Google Patents
High elasticity and high strength dust ring Download PDFInfo
- Publication number
- CN101725714A CN101725714A CN200810167897A CN200810167897A CN101725714A CN 101725714 A CN101725714 A CN 101725714A CN 200810167897 A CN200810167897 A CN 200810167897A CN 200810167897 A CN200810167897 A CN 200810167897A CN 101725714 A CN101725714 A CN 101725714A
- Authority
- CN
- China
- Prior art keywords
- ring
- dust
- supporting slip
- slip ring
- elasticity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000428 dust Substances 0.000 title claims abstract description 66
- 238000007790 scraping Methods 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 12
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 6
- 239000004677 Nylon Substances 0.000 claims abstract description 5
- 229920001778 nylon Polymers 0.000 claims abstract description 5
- 229920006324 polyoxymethylene Polymers 0.000 claims abstract description 5
- 238000012856 packing Methods 0.000 claims description 5
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 4
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 4
- 150000002466 imines Chemical class 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 2
- 239000012535 impurity Substances 0.000 abstract description 10
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract 1
- 239000004642 Polyimide Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000000945 filler Substances 0.000 abstract 1
- 239000005011 phenolic resin Substances 0.000 abstract 1
- 229920001568 phenolic resin Polymers 0.000 abstract 1
- 229920001721 polyimide Polymers 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
- Sealing Devices (AREA)
Abstract
The invention relates to a dust ring applied to a hydrocylinder and a pneumatic cylinder. The existing dust ring normally can not satisfactorily meet requirements of the hydrocylinder and pneumatic cylinder when operational and environmental conditions thereof are harsh and multiple impurities exist outside the cylinder. In the invention, the reason behind the failure of the existing dust ring is summarized, a novel dust ring which is composed of two compound materials-'high elasticity and high strength dust ring' is adopted. The dust ring is seen as the chart indicates. The high elasticity and high strength dust ring is composed of a dust scraping ring and a supporting slip ring(in the chart, 'dust scraping ring 3' and 'supporting slip ring 4' can be seen).The dust ring is in the shape of section lip or boot cut, the inner diameter labial margin thereof the dust ring is pressed against a piston rod, the fixed excircle part is embedded into a cylinder lid groove, a supporting slip ring is embedded in the middle part where the inner diameter of the dust scrapping ring is contacted with the piston rod, the supporting slip ring is also embedded into the inner diameter of the dust scrapping ring and perfectly matches with the inner ring without gaps, thus preventing dust. The 'dust scrapping ring 3' is made from material with sufficient mechanical strength and fairly good mechanical elasticity (such as polyformaldehyde, modified nylon, phenolic resin, polyimide) and the selection of the raw materials depends on working medium and working environments and other conditions. The supporting slip ring is made from polytetrafluoroethylene filler.
Description
Technical field
The present invention relates to a kind of dust ring that is used for hydraulic jack and cylinder.
Background technique
Hydraulic jack in the modern hydraulic systems, especially large-scale servo-hydraulic oil cylinder, the reason that influences its working life has a lot.But most important reason is exactly the inefficacy of dust ring, causes the outer impurity of cylinder to enter in the cylinder by dust ring, and scratch wearing and tearing seal ring, guide ring, piston rod, oil cylinder casing wall etc. cause the internal and outernal leakage of working medium, the damage of oil cylinder, inefficacy.
Trace it to its cause and mainly be: owing to now use dust ring (Fig. 2 " lip type dust ring 3 ") to adopt mostly on material is rubber, polyurethane, polytetrafluoroethylene packing etc.; Structurally adopt lip type (see figure 2) and combination form (see figure 3) mostly.
They each have its advantage, and its shortcoming is also arranged.Advantage is not said, only says shortcoming.It is best analyzing lip type structure dust blowing ability from structure, but present this lip type dust ring (see figure 2) adopts modified rubber, modified polyurethane elastomeric material mostly on material, and these mechanical strength are strong inadequately, can not the abominable outer impurity of cylinder of fine removing environment.
Though combined dust ring (see figure 3) mechanical strength is enough, but structural type is bad, the outer impurity of Fig. 3 " dust ring 4 " row's of scraping cylinder is indifferent, the outer impurity of cylinder be easy to enter between piston rod (Fig. 3 " piston rod 7 ") and the cylinder cap (Fig. 3 " cylinder cap 2 ") passive movement faster piston rod bring into, embed dust ring (Fig. 3 " dust ring 4 ") earlier, after bring in the cylinder, cause scratch, the seal ring (Fig. 3 " seal ring 5 ") of grinding away, guide ring (Fig. 3 " guide ring 6 "), piston rod, the oil cylinder casing wall, make the working medium internal and outernal leakage, last oil cylinder damages and lost efficacy, even brings disaster to hydraulic system, valve damages.
Summary of the invention
Main purpose of the present invention provides a kind of high elasticity and high strength dust ring.With the material (as polyoxymethylene, modification of nylon, fragrant urea formaldehyde, the poly-imines etc. that mills) that adopts material to have sufficient mechanical strength as " dust scraping ring 3 " among Fig. 1 and have certain mechanical elasticity, adopt material to have extremely wear-resisting, utmost point low coefficient of friction and have certain water environment capacity and the suitable polytetrafluoroethylene packing of mechanical strength new dust ring---" high elastic and strength prevents dust " of coming complex group to become as " supporting slip ring 4 " among Fig. 1.It adopts lip type dust ring to be easy to the outer impurity of cylinder is scraped the splendid structure of row to the piston rod outside in shape." dust scraping ring 3 " by having material (as polyoxymethylene, modification of nylon, fragrant urea formaldehyde, the poly-imines etc. that mills) the outer impurity of the row of scraping cylinder that mechanical strength is good and have certain mechanical elasticity, better improves the applying ability of dust blowing ability and itself and piston rod with section likeness in form boot last; " dust scraping ring 3 " its structure adopts section lip type or claims boot last, at it with " supporting slip ring " contacts the transition of lip type position employing round surface, to improve its elasticity and life-span.Among Fig. 1 " supporting slip ring 4 " utilize polytetrafluoroethylene packing to make supporting slip ring, and well embed " dust scraping ring 3 " inboard, to support dust scraping ring.The area of contact of supporting slip ring and piston rod outer side surface is greater than dust scraping ring and piston rod outer side surface area of contact, improving dust scraping ring friction durability, to reduce the dust scraping ring friction, and the secondary dust blowing also arranged and receive certain dust scraping ring to scrape Lou impurity effect.Thereby improve the anti-dust performance and the life-span of dust ring, to ensure the working life of oil cylinder.
Improvement through above-mentioned causes the dust ring ability of hydraulic jack and cylinder to improve greatly, and the oil cylinder life-span prolongs, and obtains good economic and social benefit.
Description of drawings:
Fig. 1 combines novel dust ring for composite material of the present invention---" high elastic and strength is dustproof " circle sectional schematic diagram;
Fig. 2 is existing lip type dust ring schematic representation;
Fig. 3 is existing combined type dust ring schematic representation;
Embodiment
Shown in Figure 1, the invention discloses two kinds of novel dust rings that composite material combines of a kind of employing---" high elastic and strength is dustproof " circle.Make (as polyoxymethylene, modification of nylon, fragrant urea formaldehyde, the poly-imines etc. that mills) with adopt the good material of comprehensive mechanical performance as " dust scraping ring 3 " among Fig. 1.It adopts lip type dust ring to be easy to the outer impurity of cylinder is scraped the splendid structure of row to the piston rod outside in shape.
As shown in fig. 1, " supporting slip ring 4 " material adopts polytetrafluoroethylene packing to make.It adopts lip type " dust scraping ring 3 " the inboard mode that embeds will " dust scraping ring 3 " to reduce with area of contact of piston rod outer side surface in shape, improving the friction of dust scraping ring friction durability, minimizing dust scraping ring, and receives certain dust scraping ring to scrape leakage impurity.Advantage wear-resisting, that friction factor is extremely low, intensity is extremely strong, effect is splendid that the dust ring of this kind structure has.
Claims (4)
1. a high elasticity and high strength dust ring is characterized in that: overall structure adopts section lip type or claims boot last, its internal diameter antelabium is close to piston rod, fixedly excircle part embeds in the cylinder cap groove, and the intermediate portion that the dust scraping ring internal diameter contacts with piston rod is embedded with supporting slip ring (among Fig. 1 " supporting slip ring 4 ").Supporting slip ring also embeds the dust scraping ring internal diameter, and does not well have the gap and coincide.
2. high elasticity and high strength dust ring as claimed in claim 1 is characterized in that: " dust scraping ring 3 " adopts material is the material (as polyoxymethylene, modification of nylon, fragrant urea formaldehyde, the poly-imines etc. that mills) that has sufficient mechanical strength and have fairly good mechanical elasticity.
3. high elasticity and high strength dust ring as claimed in claim 1 is characterized in that: " dust scraping ring 3 " its structure adopts section lip type or claims boot last, contacts lip type position with supporting slip ring at it and adopts the round surface transition.
4. high elasticity and high strength dust ring as claimed in claim 1 is characterized in that: it is to have very wear-resisting polytetrafluoroethylene packing that supporting slip ring adopts material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810167897A CN101725714A (en) | 2008-10-16 | 2008-10-16 | High elasticity and high strength dust ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810167897A CN101725714A (en) | 2008-10-16 | 2008-10-16 | High elasticity and high strength dust ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101725714A true CN101725714A (en) | 2010-06-09 |
Family
ID=42447074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810167897A Pending CN101725714A (en) | 2008-10-16 | 2008-10-16 | High elasticity and high strength dust ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101725714A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110537044A (en) * | 2017-03-16 | 2019-12-03 | 特瑞堡密封系统德国有限公司 | seal assembly |
| CN110612411A (en) * | 2017-05-09 | 2019-12-24 | 美国圣戈班性能塑料公司 | Seals, components and methods of use |
| CN116753205A (en) * | 2023-07-05 | 2023-09-15 | 深圳市伙伴气动精密机械有限公司 | A telescopic mechanism using a thin cylinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2287216Y (en) * | 1996-01-10 | 1998-08-05 | 北京柯力动力化学防腐技术开发公司 | Reciprocal pump with slip-ring assembly sealing structure |
| DE19841123A1 (en) * | 1998-09-09 | 2000-04-13 | Vr Dichtungen Gmbh | Radial seal for drive shaft has outer membrane in contact with bearing housing suitable for use at high temperatures and pressures |
| CN1294664A (en) * | 1999-02-18 | 2001-05-09 | 萱场工业株式会社 | Seal structure |
| JP3197850B2 (en) * | 1997-09-19 | 2001-08-13 | 日本バルカー工業株式会社 | Sealing material for cylinder |
| DE202005006553U1 (en) * | 2005-04-22 | 2005-07-14 | Vr Dichtungen Gmbh | Radial shaft seal comprises membrane and support ring with centering section on its outer rim which press-fits into seal mounting and has wedge-shaped support section on its inner rim |
-
2008
- 2008-10-16 CN CN200810167897A patent/CN101725714A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2287216Y (en) * | 1996-01-10 | 1998-08-05 | 北京柯力动力化学防腐技术开发公司 | Reciprocal pump with slip-ring assembly sealing structure |
| JP3197850B2 (en) * | 1997-09-19 | 2001-08-13 | 日本バルカー工業株式会社 | Sealing material for cylinder |
| DE19841123A1 (en) * | 1998-09-09 | 2000-04-13 | Vr Dichtungen Gmbh | Radial seal for drive shaft has outer membrane in contact with bearing housing suitable for use at high temperatures and pressures |
| CN1294664A (en) * | 1999-02-18 | 2001-05-09 | 萱场工业株式会社 | Seal structure |
| DE202005006553U1 (en) * | 2005-04-22 | 2005-07-14 | Vr Dichtungen Gmbh | Radial shaft seal comprises membrane and support ring with centering section on its outer rim which press-fits into seal mounting and has wedge-shaped support section on its inner rim |
Non-Patent Citations (1)
| Title |
|---|
| Г.Р.ХАЧАТРЯН等: "橡胶和橡胶铠装防尘圈的现代结构、材料和制造工艺", 《世界橡胶工业》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110537044A (en) * | 2017-03-16 | 2019-12-03 | 特瑞堡密封系统德国有限公司 | seal assembly |
| US11920681B2 (en) | 2017-03-16 | 2024-03-05 | Trelleborg Sealing Solutions Germany Gmbh | Seal assembly |
| CN110612411A (en) * | 2017-05-09 | 2019-12-24 | 美国圣戈班性能塑料公司 | Seals, components and methods of use |
| CN116753205A (en) * | 2023-07-05 | 2023-09-15 | 深圳市伙伴气动精密机械有限公司 | A telescopic mechanism using a thin cylinder |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100609 |